luck/tmp_suning_uos_patched
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frv, exec: remove redundant set_fs(USER_DS)

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The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Also removed the dead code in flush_thread().

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mathias Krause 2011-07-26 16:08:15 -07:00 committed by Linus Torvalds
parent 6fd4ce8864
commit adc400f690
2 changed files with 1 additions and 5 deletions
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1
arch/frv/include/asm/processor.h
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@ -97,7 +97,6 @@ extern struct task_struct *__kernel_current_task;
*/ */
#define start_thread(_regs, _pc, _usp) \ #define start_thread(_regs, _pc, _usp) \
do { \ do { \
set_fs(USER_DS); /* reads from user space */ \
__frame = __kernel_frame0_ptr; \ __frame = __kernel_frame0_ptr; \
__frame->pc = (_pc); \ __frame->pc = (_pc); \
__frame->psr &= ~PSR_S; \ __frame->psr &= ~PSR_S; \

5
arch/frv/kernel/process.c
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@ -143,10 +143,7 @@ void machine_power_off(void)
void flush_thread(void) void flush_thread(void)
{ {
#if 0 //ndef NO_FPU /* nothing */
unsigned long zero = 0;
#endif
set_fs(USER_DS);
} }
inline unsigned long user_stack(const struct pt_regs *regs) inline unsigned long user_stack(const struct pt_regs *regs)